The most flights from SPB to SSB are scheduled on a Monday (7 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).
In terms of precipitation, rainfall in Christiansted ranges from 1.6 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. March is typically the driest time to visit Christiansted when rainfall is around 1.6 in.
If weather is an important factor for your trip to Christiansted, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 78.8 F).